<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>.1{font-family:宋体;font-size:30px;color:blue;}
.2{font-family:宋体;font-size:40px;color:green;}</style>
</head>
<body>
<h1 class="1">1</h1>
<h2 class="2">2</h2>
</body>
</html>